Effects of Thickness, Deformation Rate and Energy Partitioning on the Work of Fracture Parameters of uPVC Films
Effects of Thickness, Deformation Rate and Energy Partitioning on the Work of Fracture Parameters of uPVC Films
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DOI：
10.1007/s00289-003-0169-5
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发表时间：
2003-06
期刊：
影响因子：
3.2
通讯作者：
M. Maspoch;J. Gámez-Pérez;J. Karger‐Kocsis
中科院分区：
文献类型：
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作者：
M. Maspoch;J. Gámez-Pérez;J. Karger‐Kocsis
采用断裂基本功（EWF）法对未增塑型聚氯乙烯（uPVC）薄膜进行了测试。研究了加载速率和膜厚对断裂参数和拉伸性能的影响。此外，采用两种不同的方法（“屈服”和“起始”）进行能量分配分析，这两种方法对储存的弹性能的处理不同。结果表明，薄膜厚度和变形速率（< 100 mm/min）对EWF项的影响较小。另一方面，高加载速率（1.2 m/s）下的断裂具体必要功（we）接近静态加载速率（< 100 mm/min）下的屈服相关项（we,y）。
Unplasticised poly(vinyl chloride) (uPVC) films have been tested using the essential work of fracture (EWF) method. Influence of loading rate and film thickness on the tensile properties and work of fracture parameters was evaluated. In addition, energy partition analyses were carried out applying two different approaches (“yielding” and “initiation”), which differ in the treatment of the stored elastic energy. Results showed less effect of the film thickness and deformation rate (<l00 mm/min) on the EWF terms. On the other hand, the specific essential work of fracture (we) at high load rate (1.2 m/s) approached the yielding-related term (we,y) obtained at static loading rates (<l00 mm/min).